Automatic train-stop.



M. F. SLATTERY & C. A. LINEHAN.

AUTOMATIC TRAIN STOP.

APPLICATION FILED JULY 21,1914.

1,150,788. Patented Aug. 17, 1915.

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M. F. SLATTERY & C. A. LINEHAN.

AUTOMATIC TRAIN STOP APPLICATION FILED JULY 2|. 1914.

1,150,788 Patented Aug. 17, 1915.

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: Specification of Letters Patent.

Patented Aug. 17, 19515.

Application filed. July 21, 1914. Serial No. 852,265;

Schenectady, respectively, in the counties of Albany and Schenectady, respectively, and State of New York, have invented new and useful Improvements in Automatic Train- Stops, of which the following is a specification.

This invention relates to improvements in train stopping devices and has particular application to a device for use in con unction with the road signaling system.

In carrying out the present invention, it is our purpose to prov1de a device of the class described which may be quickly and conveniently installed'and connected with the road signal system now in use witho-ut necessitating elaborate changes in the signal sys tem.

It is also our purpose to provide a device of the type set forth which will embrace the desired features of simplicity, efliciency and durability, which may be installed and maintained at a minimum expense and which will operate efi'ectively under all conditions.

With the above and other objects in view,

the invention consists in the construction,

is a cross sectional view through a trackwa-y showing the track obstacle and the connection between the latter and adjacent road signal. Fig. 2 1s a view in side elevation of the track obstacle removed from the track way. Fig. 3 is a cross sectional view therethrough. Fig. 4 is a diagrammatic plan view showing the relative positions of the car carried mechanism and track obstacle.

Referringnow to the drawings in detail, 1 designates a trackway which, in the pres ent instance, is divided into blocks and located adjacent to the entrance to each block and controlling traffic into the same is a semaphore 2 comprising the usual standard 3 and signal blade 4 pivoted upon the standard adjacent to the upper end thereof and operating rod 5, the latter having the upper end thereof connected with the signal blade and the lower extremity connected with the operating motor of the semaphore so that the blade may be swung to danger and clear positions.

Our improved train stopping apparatus is designed for use in conjunction with the block signaling system and is so constructed that the same may be installed and connected up with the road signals or semaphores without necessitating elaborate changes in the construction of the semaphores. This train stopping apparatus embodies an obstacle 6 located at the entrance to each block and disposed between the lines of rails of the trackway approximately centrally thereof, such obstacle comprising a base plate 7 bolted or otherwise fastened to the upper surface of the ties and extending transversely of the trackway, standards 8, 8 uprising from the base plate and spaced apart in parallelism and carrying, adjacent to the upper extremities thereof, a pivot pin 9, and an arm 10 mounted upon the pin 9 and capable of swinging movement transversely of the trackway and adapted to lie in a horizontal plane and a vertical plane, the upper end of the arm 10, when the latter is vertical, projecting above the upper extremity of the standards 8 8. Arranged adjacent to the semaphore standard 3 is abase plate 11 and uprising from the base plate 11 is a supporting standard 12 and pivoted to one face of the supporting standard 12 is a bell crank lever 13 having a horizontal limb and a depending vertical limb. Pivotally connected to the lower extremity of the depending vertical limb of the bell crank lever 13 is one end of a horizontal rod 1 having the opposite end pivotally connected with the lower extremity of the arm 10,-such rod 14: lying beneath the adjacent line of rails. In the present instance, the base 7 is slotted to accommodate the lower end of the arm 10 and depending from the base is a U-shaped yoke 6 having the upper extremities of the limbs thereof secured to the base at the opposite sides of the slot therein, such yoke incasing the connection between the adjacent end of the arm 10and the rod 14. Projecting outwardly from the actuating rod 5 of the signal blade in a plane coincident with that of the horizontal limb of the bell crank lever is a pin 15 and pivotally connected with the pin 15 is one end of a link 16 having the opposite end thereof pivoted to the horizontal limb of the bell crank lever as at 17.

In practice, when the signal bladeis in clear position the link 16 and bell crank lever 13 are actuated to push the rod 1a and so swing the arm 10 out of vertical position and into inactive position, while when the way so that when the controlling element of the car carried mechanism impacts against one side or the other of the arm 10 the latter Wlll remain immovable and the 7 connections between the arm and signal blade relieved. of any stra n.

y In the embodiment of our invention selected for illustrative purposes, the car, carried stopplng mechanism comprises a valve 18 connected in the train line air pipe and" provided with a depending handle adapted to contact with the arm 10 when the latter is in vertical or, active position so that the valve will be opened and thepressure in the" brake pipe reduced to effect an application of the brakes to the wheels In the present instance, the central portion of the pilot of the locomotive is formed with a longitudinal slot to accommodate the obstacle.

From the foregoing description taken in connection with the accompanying drawings, the construction, mode of operation and mannerof employing our lnvention will be readily apparent.

It will be seen thatlwe have provided an automatic train stop wherein the track obstacle may be readily and quickly connected up with the road signal system: without changing the structure of the latter and wherein the connections between the obstacle and the signal will be relieved of any strain or stress due to the impact between the handle of the valve in the brakepipe and the arm of the obstacle. s

We claim: I m 7 A track obstacle comprising a base plate,

standards uprising from said base plate and J spaced apart in parallel1sm,a pivot pin car-i ried by said standards adjacent to the upper} extremities thereof and extending longitudinallyof the track'way, an arm pivoted between said standards and capable of swinglng-movementto EtCtlVG and inactlve positions and movable transversely of. the trackway, said base be1 .ng slotted to accommodate the lower end of said arm, a rod connected with the lower extremity of said arm,- means foractuatmg said rod to swing said armpand a U-shaped yoke having the ends ofthe limbs thereof'secured to the under surfaceof said :baseat the opposite sides of the slot thereinand surrounding the connection between said ro'diand arm. 7

, In testimony whereof we affix our signa- 7 tures in presence of two witnesses.

Copies at this patent may be obtained for five cents each, by addressing the Commissioner of iatents,

Washington, D. G. i 

